\begin{tabular}{cc|c||c|c}
    \multicolumn{3}{c||}{\textbf{Exploração Fácil}}         & \multicolumn{2}{c}{\textbf{Exploração Difícil}}                                             \\
    \multicolumn{2}{c|}{\emph{Ótimo humano}}        & \emph{Abuso da pontuação}                 & \emph{Recompensas densas} & \emph{Recompensas esparsas} \\
    \hline
    Assault     & Asterix                    & Beam Rider                & Alien                     & Freeway                                            \\
    Asteroids   & Atlantis                   & Kangaroo                  & Amidar                    & Gravitar                                           \\
    Battle Zone & Berzerk                    & Krull                     & Bank Heist                & Montezuma's Revenge                                \\
    Bowling     & Boxing                     & Kung Fu Master            & Frostbite                 & Pitfall                                            \\
    Breakout    & Centipede                  & Road Runner               & H E R O                   & Private Eye                                        \\
    Chopper Cmd & Crazy Climber              & Seaquest                  & Ms Pac Man                & Solaris                                            \\
    Defender    & Demon Attack               & Up N Down                 & Q Bert                    & Venture                                            \\
    \hline
\end{tabular}
